Space

The "Blue Marble" was the first photo of the whole Earth and the only ever taken by a human. Fifty years on, new images of the planet reveal visible changes to the Earth's surface.

The mission will explore new ways of reducing the cost of feeding an astronaut.

Scientists find new but tentative evidence that a faraway world orbiting another star may be home to life.

Researchers studying planet K2-18b's atmosphere have detected signs of molecules which on Earth are only produced by simple organisms.

Proponents say space-based data centres will be more secure, but sceptics say big hurdles remain.

Nasa says there is a small chance a recently spotted asteroid could collide with the Moon. Studying it can inform our understanding of the Earth's past and our future.